Handwheel



"Sept. 29, 19.36. 5 GREEN ET AL 7 2,055,488

HANDWHEEL Filed Jan 25, 1955 III-- Inventor's Samuel I3- Green Furr'estKJ-Inwar Attur'n ey TATS ATET ores HANDWHEEL Samuel G. Green, Gray, Ga.,and Forrest K. Howard, East Falls Church, Va.

Application January 25, 1935, Serial No. 3,442 Claims. (Cl. 116-124)(Granted under the act or March 3, 1883, as amended April 30, 1928; 3'700. G. 757) The invention described herein may be manuthrough thehandwheel and has a tapered head factured and used by or for theGovernment for 3!] adapted to engage the tapered interior wall l9governmental p po Without the payment to of the dial ring. A portion ofthe head 30 of the us of any royalty thereon. bolt is cut out as at 3!for the purpose of engag- This invention relates to a handwheel. ing thehub 20 of the handwheel and thereby The p p e O he invention is toprovide a maintaining the bolt against rotational displacesimple andeffective clamp for the dial ring of a ment. The bolt has a bearingsurface 32 directly handwheel and to provide a retaining member in rearof the head, for the ring which forms p Of a ic latcb- A nut 33 ismounted on the threaded stem of To these and other ends, the inventionconthe bolt and is restrained against axial displace- 10 sists in theconstruction, arrangement and comment while being free to rotate bymeans of a bination of elements described hereinafter and plate 34 whichis secured to the handwheel by a pointed out in the claims forming apart of this pin 35 and has its inner end riding in an anspecification.nular groove 36 in the nut. As a consequence of 5 A practical embodimentof the invention is ilthis arrangement rotation of the nut causes thelustrated in the accompanying drawing, wherein: bolt to be advanced orretracted to respectively Fig. 1 is a view of a housing containinggearing free or clamp the dial ring. When the dial ring which iscontrolled by the improved handwheel. is free it may be rotated toadjust the scale l5 Fig. 2 is a view in side elevation thereof. withreference to the index I6. When the dial Fig. 3 is a sectional view onthe line 3-3 of ring is clamped it moves with the handwheel. 20

Fig. 2. We claim:

Fig. 4 is a detail view in elevation of the retain- 1. A support, anindex thereon, a shaft caring plate. ried by the support and having aprojecting end, Fig. 5 is a perspective view of the clamping a handwheelfixed on the projecting end of the bolt. shaft and having an annularseat, a ring with a 25 Referring to the drawing by characters ofreftapered interior wall mounted on the seat and erence there is shownahousing 5 in whichashaft having a scale readable against the index, a 6is mounted on anti-friction bearing units 'I-l. plate secured to thehandwheel and retaining A pinion 8 on the shaft has a worm 9 for drivingthe ring, said plate having radially disposed a worm wheel l0. teeth onits outer face, a plunger carried by the 30 One end of the shaft 6projects from the houssupport and engaging the teeth of the plate, a ingand mounts ahandwheel II which is fixed on bolt mounted in the handwheeland having a the shaft by means of a pin l2. The handwheel is taperedhead arranged to engage the interior formed with an annular seat l3 forsupporting a wall of the ring, means whereby the bolt is held tapereddial ring 14 which is positioned adjacent against rotationaldisplacement, a nut threaded 35 the housing. The ring I4 is inscribedwith a on the bolt, and means for holding the nut scale l5 which isreadable against an index 5 against axial displacement. on the housing.2. A support, an index thereon, a shaft car- The ring [4 is retained onits seat by a plate ried by the support and having a projecting I! whichhas a beveled edge l8 engaging the taend, a handwheel fixed on theprojecting end of 40 pered interior wall l9 of the ring. The plate isthe shaft, a ring with a tapered interior wall secured to the face ofthe hub 20 of the handmounted on and abutting the handwheel, said wheelby means of screws 2| and is initially posiring having a scale readableagainst the index, tioned for assembly thereto by means of a pin 22 abolt mounted in the handwheel and having a receivable in an aperture 23in the hub 20. The tapered head arranged to engage the interior wallouter face of the plate is formed with radially of the ring, meanswhereby the bolt is held disposed teeth 24 adapted to be engaged by theagainst rotational displacement, a nut threaded pointed head of aplunger 25 which is mounted in on the bolt, and means for holding thenut a thimble 26 inserted in a recess 21 in the housagainst axialdisplacement.

ing. The plunger is normally urged into engage- 3. A support, an indexthereon, a shaft carried 50 ment with the plate ll by a spring 28 housedin by the support and having a projecting end, a the thimble. Theassembly constitutes a click handwheel fixed on the projecting end ofthe latch for the handwheel. shaft, a ring with a tapered interior wallmounted The dial ring is arranged to be clamped to the on and abuttingthe handwheel, said ring having handwheel by means of a bolt 29 whichextends a scale readable against the index, a bolt mount- 55 ed in thehandwheei and having a tapered head arranged to engage the interior wallof the ring, and means for holding the bolt with its head in Y clampingengagement with the ring.

4. A support,ran index thereon, a shaft carried. by the support andhaving a projecting end,

a handwheel fixed on'the projecting end of the shaft, a ring withatap'ered interior wall mounted on andabutting the handwheel, said ringhaving a scale readable against the index, and

means carried by the handWheel and engaging the interior wall of thering for clamping the ring to the handwheel.

5. A support, an index thereon, a shaft cafried by the support andhaving a projecting end, a handwheel fixed on the projecting end of theshaft, a ring with an interior tapered wall mounted on and abutting thehandwheel, means for clamping the ring to the handwheel, said ringhaving a scale readable against the index, a plate secured to thehandwheel'and retaining the ring, said plate having radially disposedteeth on its outer face, and a plunger carried by the support 10 andengaging the teeth of the plate.

SAMUEL G. GREEN. FORREST K. HOWARD.

